From: Shaohua Li <shli@fb.com>
To: linux-raid@vger.kernel.org
Cc: Kernel-team@fb.com, songliubraving@fb.com, hch@infradead.org,
dan.j.williams@intel.com, neilb@suse.de
Subject: [patch v2 00/11]md: fix raid5 write hole
Date: Thu, 13 Aug 2015 14:31:53 -0700 [thread overview]
Message-ID: <cover.1439500639.git.shli@fb.com> (raw)
Hi Neil,
This is the updated patch for the raid5 write hole issue. I thought I addressed
most of issues from you and Christoph. Please let me know if anything is
missed. Something not done yet:
- Still use NOFAIL allocation. I don't think 2-element mempool is ok. An
io_unit will have several bio (> 2), 2 element bioset isn't ok. We can
dispatch all bio of the io_unit if bio allocation fails, but this will increase
complexity. I'd prefer using NOFAIL allocation now for simplicity and fix it
later if necessary
- Add flag for reshape handling in disk format, but don't support it yet
Thanks,
Shaohua
Shaohua Li (9):
md: override md superblock recovery_offset for journal device
raid5: export some functions
raid5: add a new state for stripe log handling
raid5: add basic stripe log
raid5: log reclaim support
raid5: log recovery
raid5: disable batch with log enabled
raid5: don't allow resize/reshape with cache(log) support
raid5: enable log for raid array with cache disk
Song Liu (2):
MD: replace special disk roles with macros
MD: add a new disk role to present write journal device
drivers/md/Makefile | 2 +-
drivers/md/md.c | 44 +-
drivers/md/md.h | 13 +-
drivers/md/raid5-cache.c | 1094 ++++++++++++++++++++++++++++++++++++++++
drivers/md/raid5.c | 137 +++--
drivers/md/raid5.h | 20 +
include/uapi/linux/raid/md_p.h | 70 ++-
7 files changed, 1320 insertions(+), 60 deletions(-)
create mode 100644 drivers/md/raid5-cache.c
--
1.8.1
next reply other threads:[~2015-08-13 21:31 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-13 21:31 Shaohua Li [this message]
2015-08-13 21:31 ` [patch v2 01/11] MD: replace special disk roles with macros Shaohua Li
2015-08-13 21:31 ` [patch v2 02/11] MD: add a new disk role to present write journal device Shaohua Li
2015-08-13 21:31 ` [patch v2 03/11] md: override md superblock recovery_offset for " Shaohua Li
2015-08-13 21:31 ` [patch v2 04/11] raid5: export some functions Shaohua Li
2015-08-13 21:31 ` [patch v2 05/11] raid5: add a new state for stripe log handling Shaohua Li
2015-08-13 21:31 ` [patch v2 06/11] raid5: add basic stripe log Shaohua Li
2015-08-13 21:32 ` [patch v2 07/11] raid5: log reclaim support Shaohua Li
2015-08-13 21:32 ` [patch v2 08/11] raid5: log recovery Shaohua Li
2015-08-13 21:32 ` [patch v2 09/11] raid5: disable batch with log enabled Shaohua Li
2015-08-13 21:32 ` [patch v2 10/11] raid5: don't allow resize/reshape with cache(log) support Shaohua Li
2015-08-13 21:32 ` [patch v2 11/11] raid5: enable log for raid array with cache disk Shaohua Li
2015-08-17 4:45 ` [patch v2 00/11]md: fix raid5 write hole NeilBrown
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